fkie_cve-2022-50077
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-11-17 19:27
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: apparmor: fix reference count leak in aa_pivotroot() The aa_pivotroot() function has a reference counting bug in a specific path. When aa_replace_current_label() returns on success, the function forgets to decrement the reference count of “target”, which is increased earlier by build_pivotroot(), causing a reference leak. Fix it by decreasing the refcount of “target” in that path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11c3627ec6b56c1525013f336f41b79a983b4d46Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ceeb3296e9dde1d5772348046affcefdea605e2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ca40ad7afae144169a43988ef1a3f16182faf0aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64103ea357734b82384c925cba4758fdb909be0cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d53194707d2a1851be027cd74266b96ceff799d3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef6fb6f0d0d8440595b45a7e53c6162c737177f4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f4d5c7796571624e3f380b447ada52834270a287Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14
linux linux_kernel 4.14


To clipboard 

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  "cveTags": [],
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: fix reference count leak in aa_pivotroot()\n\nThe aa_pivotroot() function has a reference counting bug in a specific\npath. When aa_replace_current_label() returns on success, the function\nforgets to decrement the reference count of \u201ctarget\u201d, which is\nincreased earlier by build_pivotroot(), causing a reference leak.\n\nFix it by decreasing the refcount of \u201ctarget\u201d in that path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: apparmor: se corrige una fuga de referencias en aa_pivotroot(). La funci\u00f3n aa_pivotroot() presenta un error de conteo de referencias en una ruta espec\u00edfica. Cuando aa_replace_current_label() retorna con \u00e9xito, la funci\u00f3n olvida decrementar el conteo de referencias de \"target\", que se incrementa previamente mediante build_pivotroot(), lo que provoca una fuga de referencias. Para solucionarlo, reduzca el conteo de referencias de \"target\" en esa ruta."
    }
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  "id": "CVE-2022-50077",
  "lastModified": "2025-11-17T19:27:18.587",
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          "attackVector": "LOCAL",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-06-18T11:15:36.627",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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}


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